Simply place the tool or object you want to magnetize inside the coil and briefly press S1. The generated single polarity field should magnetize the object if the material it is made to allow.
The frequency depends on the coil and is not found in the original documentation but should be...
This is a device for those who need to show that they know how to use digital electronics but have...
Using an operational amplifier with FET, this circuit from a 1977 publication can generate...